Osmosis is the process by which water enters our tissues. All of our cells are surrounded by a membrane that selectively allows anything the cell needs but prevents unwanted molecules from entering. As illustrated in the Osmosis egg lab report, the egg's mass increased in the distilled water and vinegar because they were hypotonic to the solution in the gg. This process causes water to diffuse into cells. Furthermore, as the Osmosis Egg Lab Report depicts, the shell on the egg dissolved because the eggshell is made of calcium carbonate and vinegar contains acetic acid. In the lab report below, you will find important segments, starting from Background Information, Terms to Know, Objective, Hypothesis, Data Finding, Procedure, Solution, Observations, Explanation, and Results.